<!DOCTYPE html>
<html lang="zh-CN">
  <head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <!-- 上述3个meta标签*必须*放在最前面，任何其他内容都*必须*跟随其后！ -->
    <title>Bootstrap 101 Template</title>

    <!-- Bootstrap -->
    <link href="css/bootstrap.min.css" rel="stylesheet">
    <style type="text/css">
    .youbian{background: red;}
    </style>

    <!-- HTML5 shim and Respond.js for IE8 support of HTML5 elements and media queries -->
    <!-- WARNING: Respond.js doesn't work if you view the page via file:// -->
    <!--[if lt IE 9]>
      <script src="//cdn.bootcss.com/html5shiv/3.7.2/html5shiv.min.js"></script>
      <script src="//cdn.bootcss.com/respond.js/1.4.2/respond.min.js"></script>
    <![endif]-->
  </head>
  <body>
    <h1>你好，世界！</h1>
    <div class="container">
      <div class="row">
        <div class="col-md-8 col-xs-6">左侧</div>
        <div class="col-md-4 col-xs-6 youbian">右侧</div>
      </div>
    </div>
    <a class="btn btn-default" href="#" role="button">首页</a>
    <button type="button" class="btn btn-success">视频</button>
    <div class="row">
  <div class="col-sm-6 col-md-4">
    <div class="thumbnail">
      <img src="..." alt="无图片">
      <div class="caption">
        <h3>Thumbnail label</h3>
        <p>世界你好</p>
        <p><a href="#" class="btn btn-primary" role="button">Button</a> <a href="#" class="btn btn-default" role="button">Button</a></p>
      </div>
    </div>
  </div>
</div>
    
    <!-- jQuery (necessary for Bootstrap's JavaScript plugins) -->
    <script src="js/jquery.min.js"></script>
    <!-- Include all compiled plugins (below), or include individual files as needed -->
    <script src="js/bootstrap.min.js"></script>
  </body>
</html>